If you need assistance, please send an email to forum at 4hv dot org. To ensure your email is not marked as spam, please include the phrase "4hv help" in the subject line. You can also find assistance via IRC, at irc.shadowworld.net, room #hvcomm.
Support 4hv.org!
Donate:
4hv.org is hosted on a dedicated server. Unfortunately, this server costs and we rely on the help of site members to keep 4hv.org running. Please consider donating. We will place your name on the thanks list and you'll be helping to keep 4hv.org alive and free for everyone. Members whose names appear in red bold have donated recently. Green bold denotes those who have recently donated to keep the server carbon neutral.
Special Thanks To:
Aaron Holmes
Aaron Wheeler
Adam Horden
Alan Scrimgeour
Andre
Andrew Haynes
Anonymous000
asabase
Austin Weil
barney
Barry
Bert Hickman
Bill Kukowski
Blitzorn
Brandon Paradelas
Bruce Bowling
BubeeMike
Byong Park
Cesiumsponge
Chris F.
Chris Hooper
Corey Worthington
Derek Woodroffe
Dalus
Dan Strother
Daniel Davis
Daniel Uhrenholt
datasheetarchive
Dave Billington
Dave Marshall
David F.
Dennis Rogers
drelectrix
Dr. John Gudenas
Dr. Spark
E.TexasTesla
eastvoltresearch
Eirik Taylor
Erik Dyakov
Erlend^SE
Finn Hammer
Firebug24k
GalliumMan
Gary Peterson
George Slade
GhostNull
Gordon Mcknight
Graham Armitage
Grant
GreySoul
Henry H
IamSmooth
In memory of Leo Powning
Jacob Cash
James Howells
James Pawson
Jeff Greenfield
Jeff Thomas
Jesse Frost
Jim Mitchell
jlr134
Joe Mastroianni
John Forcina
John Oberg
John Willcutt
Jon Newcomb
klugesmith
Leslie Wright
Lutz Hoffman
Mads Barnkob
Martin King
Mats Karlsson
Matt Gibson
Matthew Guidry
mbd
Michael D'Angelo
Mikkel
mileswaldron
mister_rf
Neil Foster
Nick de Smith
Nick Soroka
nicklenorp
Nik
Norman Stanley
Patrick Coleman
Paul Brodie
Paul Jordan
Paul Montgomery
Ped
Peter Krogen
Peter Terren
PhilGood
Richard Feldman
Robert Bush
Royce Bailey
Scott Fusare
Scott Newman
smiffy
Stella
Steven Busic
Steve Conner
Steve Jones
Steve Ward
Sulaiman
Thomas Coyle
Thomas A. Wallace
Thomas W
Timo
Torch
Ulf Jonsson
vasil
Vaxian
vladi mazzilli
wastehl
Weston
William Kim
William N.
William Stehl
Wesley Venis
The aforementioned have contributed financially to the continuing triumph of 4hv.org. They are deserving of my most heartfelt thanks.
Registered Member #3414
Joined: Sun Nov 14 2010, 05:05PM
Location: UK
Posts: 4245
Steve Conner wrote ...
The only thing that doesn't make sense about this thread is, why would anyone buy more than one V12 Jag? Wasn't the first one punishment enough?
'Punishment'?.....Only on the wallet.....but I was contributing by paying extortionate 'indirect taxes'.
It's a long story....My mother 'stole' the first two
EDIT: I was once asked why I drove a V12 Jag. My response was 'Because I can't afford an Aston Martin'......I've now reached the point in life where I think a Saab 95 estate is more practical.....
Registered Member #230
Joined: Tue Feb 21 2006, 08:01PM
Location: Gracefield lower Hutt
Posts: 284
Just a quick note modern cars learn what you want to do through adaptive S/W this can take a week or two of driving for it to learn what you prefer. Disconnecting the battery for 5 mins resets all these learned parameters so it will take time before it behaves like you are used to. besides the am/fm radio loosing its presets so does the engine /transmission. even a a 12 drycell pack will keep it alive while you change batteries
Registered Member #2463
Joined: Wed Nov 11 2009, 03:49AM
Location:
Posts: 1546
A counter current could be applied while monitoring the voltage drop at the point of interest in the circuit. If the meter was nulled, i.e, zeroed before the counter curent was applied, it would show a negative voltage at the point when the counter current exceeded the spurious or leakage current. The counter current at the point of balance is what you want.
At the battery terminals for a small load, given the crud of contact, unlikely to succeed .
But across each of the fuses, this might work. No need to pull them.
The whole issue boils down to what an old potentiometer, with Weston Standard Cell, and galvanometer, did in past years. The object was to balance the voltage bridge with a dry cell, rather than drawing current from the standard cell.
These days we have cheap 6 digit DVMs to measure low voltage.
I have used somewhat similar tactics. Bit then again, I once shorted out a 48 volt forklift battery by mistake, burning up much wire.
This site is powered by e107, which is released under the GNU GPL License. All work on this site, except where otherwise noted, is licensed under a Creative Commons Attribution-ShareAlike 2.5 License. By submitting any information to this site, you agree that anything submitted will be so licensed. Please read our Disclaimer and Policies page for information on your rights and responsibilities regarding this site.
Measuring car battery drain without interrupting power?
